Letters in 1976 between Bush, later the 41st president, and George de Mohrenschildt, an oil engineer who once knew Oswald in Texas. In a handwritten letter, de Mohrenschildt complained that publicity about his relationship with Oswald was upending his life. Bush responded, saying that an examination of CIA and FBI files indicated no "indication of interest in your activities on the part of the Federal authorities in recent years."